100mm

100mm Black Magic AirBlocks are used on offshore boats where weight and performance are critical. They feature free-rolling, large-diameter aluminum sheaves with Torlon roller bearings housed in a unique center cage. UV-resistant, carbon-black Delrin balls carry sideloads. Corrosion is minimized by isolating dissimilar metals.

Blocks are Hardkote-anodized and have 17-4 PH stainless headposts and shackles. Easily disassembled. The 3199 soft attatchment Loop block has a removable dead-end post for attatchment to padeye. Lashings can also be used.